Publisher's Synopsis
Describes various types of codes and ciphers to write secret messages, including the pinhole code, the inside-out code, and the pigpen code.
Paperback (01 Jan 1998)
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Describes various types of codes and ciphers to write secret messages, including the pinhole code, the inside-out code, and the pigpen code.
ISBN: | 9780590373869 |
Publisher: | Scholastic |
Imprint: | Scholastic |
Pub date: | 01 Jan 1998 |
DEWEY: | 652.8 |
DEWEY edition: | 21 |
Language: | English |
Number of pages: | 69 |
Weight: | 68g |
Height: | 197mm |
Width: | 140mm |
Spine width: | 7mm |